To evaluate of efficacy of transgluteal (supine) approach for shock wave lithotripsy (SWL) in tre... more To evaluate of efficacy of transgluteal (supine) approach for shock wave lithotripsy (SWL) in treatment of distal ureteric stones. This prospective, randomized, comparative study was conducted on 98 patients. Patients were randomly assigned into 2 groups: group A (n = 49; prone position) and group B (n = 49; supine position, transgluteal). Inclusion criteria included patients with radiopaque lower ureteric stones ≤10 mm. Exclusion criteria included radiolucent stones, stones >10 mm, the need for any auxiliary procedure, and any contraindication for SWL. Post-SWL evaluation included plain x-ray of kidney, ureter, and bladder at 2 weeks after treatment and then at monthly intervals after treatment for 3 months. Stone-free status was defined as no residual stone fragments visible on plain x-ray. Treatment failure was defined as persistence of stone fragments at 3 months or the need for ureteroscopy. Stone-free rate after 1 treatment session was achieved in 44.9% and 75.5% for prone ...
Objectives: To evaluate the outcome of augmentation of shallow urethral plate by lingual graft in... more Objectives: To evaluate the outcome of augmentation of shallow urethral plate by lingual graft in repair of distal penile hypospadias. Patients and methods: Between June 2008 and May 2011, the procedure was performed on 23 patients with mean age 2.3 years (range 1–3). All patients had distal penile hypospadias; 11 sub coronal and 12 coronal. The urethral plate was less than 8 mm in all patients and 3 of them had history of previous hypospadias surgery. All procedures were carried out under general anesthesia using 4× magnifying loupe. After penile degloving and dorsal incision of the urethral plate, the lingual graft was harvested and sutured to the edges of the incised urethral plate from the hypospadias opening to the tip of the penis. The neourethra was closed and an intervening flap was fixed over the neourethra as a barrier against fistula formation. Results: Success rate was 87% as 20/23 patients were cured without any permanent complication throughout the follow up period. None of patients suffered meatal stenosis or required regular urethral dilatation. Three patients developed urethrocutaneous fistula, of which two closed spontaneously and one required surgical repair 6 months later. Two patients had failed procedures and delayed re-intervention was performed due to complete loss of the graft in one of them and repair disruption following infection in the other. Two patients had post-operative pain in the graft harvesting site which disappeared within days. Conclusion: The one-stage lingual augmented urethral plate urethroplasty offers promising outcomes for repair of distal penile hypospadias with narrow urethral plate.
Primary appendiceal neoplasms are uncommon, being found in approximately 0.5%-1.0% of appendectom... more Primary appendiceal neoplasms are uncommon, being found in approximately 0.5%-1.0% of appendectomy specimens at pathologic evaluation. Primary appendiceal Burkitt's lymphomas are rare occurring in 0.015% of all gastrointestinal lymphomas. Almost all reported cases of appendiceal lymphoma have proved to be non-Hodgkin lymphoma. The majority of appendiceal lymphomas are of B-cell. Patients were almost entirely males. Acute appendicitis is the most common clinical manifestation. This report describes a rare case of primary appendiceal lymphoma in a patient presented with hematuria and dull aching right lower abdominal and back pain.
IEEE Transactions on Microwave Theory and Techniques, 2000
AbstractThis paper presents a tunable CMOS directional cou-pler that utilizes lumped-element LC... more AbstractThis paper presents a tunable CMOS directional cou-pler that utilizes lumped-element LC sections. The lumped-ele-ment approach used to build the directional coupler makes it pos-sible to integrate the coupler onto a single monolithic microwave integrated circuit ( ...
IEEE Transactions on Microwave Theory and Techniques, 2000
AbstractThis paper presents a printed and an integrated bi-di-rectional tunable positive/negativ... more AbstractThis paper presents a printed and an integrated bi-di-rectional tunable positive/negative refractive-index phase shifter utilizing CMOS tunable active inductors (TAIs). The printed phase shifter is comprised of a microstrip transmission line (TL), loaded with series varactors ...
IEEE Transactions on Intelligent Transportation Systems, 2006
The objective of this paper is to collect and analyze data that can be used to model mode- and di... more The objective of this paper is to collect and analyze data that can be used to model mode- and different route-choice paradigms using same subjects and same experiment. In this paper, the authors estimated five models to address drivers' diversion, compliance, and route choice. In addition, the effect of advanced traveler information systems (ATIS) on the mode choice is also
IEEE Microwave and Wireless Components Letters, 2000
This letter presents a tunable positive/negative refractive index transmission line (TL) phase sh... more This letter presents a tunable positive/negative refractive index transmission line (TL) phase shifter utilizing active circuits. It comprises a microstrip TL loaded with series varactors and a shunt monolithic microwave integrated circuit (MMIC) to synthesize a tunable inductor. This implementation increases the phase tuning range and maintains the input and output matching of the phase shifter across the entire phase
To evaluate of efficacy of transgluteal (supine) approach for shock wave lithotripsy (SWL) in tre... more To evaluate of efficacy of transgluteal (supine) approach for shock wave lithotripsy (SWL) in treatment of distal ureteric stones. This prospective, randomized, comparative study was conducted on 98 patients. Patients were randomly assigned into 2 groups: group A (n = 49; prone position) and group B (n = 49; supine position, transgluteal). Inclusion criteria included patients with radiopaque lower ureteric stones ≤10 mm. Exclusion criteria included radiolucent stones, stones >10 mm, the need for any auxiliary procedure, and any contraindication for SWL. Post-SWL evaluation included plain x-ray of kidney, ureter, and bladder at 2 weeks after treatment and then at monthly intervals after treatment for 3 months. Stone-free status was defined as no residual stone fragments visible on plain x-ray. Treatment failure was defined as persistence of stone fragments at 3 months or the need for ureteroscopy. Stone-free rate after 1 treatment session was achieved in 44.9% and 75.5% for prone ...
Objectives: To evaluate the outcome of augmentation of shallow urethral plate by lingual graft in... more Objectives: To evaluate the outcome of augmentation of shallow urethral plate by lingual graft in repair of distal penile hypospadias. Patients and methods: Between June 2008 and May 2011, the procedure was performed on 23 patients with mean age 2.3 years (range 1–3). All patients had distal penile hypospadias; 11 sub coronal and 12 coronal. The urethral plate was less than 8 mm in all patients and 3 of them had history of previous hypospadias surgery. All procedures were carried out under general anesthesia using 4× magnifying loupe. After penile degloving and dorsal incision of the urethral plate, the lingual graft was harvested and sutured to the edges of the incised urethral plate from the hypospadias opening to the tip of the penis. The neourethra was closed and an intervening flap was fixed over the neourethra as a barrier against fistula formation. Results: Success rate was 87% as 20/23 patients were cured without any permanent complication throughout the follow up period. None of patients suffered meatal stenosis or required regular urethral dilatation. Three patients developed urethrocutaneous fistula, of which two closed spontaneously and one required surgical repair 6 months later. Two patients had failed procedures and delayed re-intervention was performed due to complete loss of the graft in one of them and repair disruption following infection in the other. Two patients had post-operative pain in the graft harvesting site which disappeared within days. Conclusion: The one-stage lingual augmented urethral plate urethroplasty offers promising outcomes for repair of distal penile hypospadias with narrow urethral plate.
Primary appendiceal neoplasms are uncommon, being found in approximately 0.5%-1.0% of appendectom... more Primary appendiceal neoplasms are uncommon, being found in approximately 0.5%-1.0% of appendectomy specimens at pathologic evaluation. Primary appendiceal Burkitt's lymphomas are rare occurring in 0.015% of all gastrointestinal lymphomas. Almost all reported cases of appendiceal lymphoma have proved to be non-Hodgkin lymphoma. The majority of appendiceal lymphomas are of B-cell. Patients were almost entirely males. Acute appendicitis is the most common clinical manifestation. This report describes a rare case of primary appendiceal lymphoma in a patient presented with hematuria and dull aching right lower abdominal and back pain.
IEEE Transactions on Microwave Theory and Techniques, 2000
AbstractThis paper presents a tunable CMOS directional cou-pler that utilizes lumped-element LC... more AbstractThis paper presents a tunable CMOS directional cou-pler that utilizes lumped-element LC sections. The lumped-ele-ment approach used to build the directional coupler makes it pos-sible to integrate the coupler onto a single monolithic microwave integrated circuit ( ...
IEEE Transactions on Microwave Theory and Techniques, 2000
AbstractThis paper presents a printed and an integrated bi-di-rectional tunable positive/negativ... more AbstractThis paper presents a printed and an integrated bi-di-rectional tunable positive/negative refractive-index phase shifter utilizing CMOS tunable active inductors (TAIs). The printed phase shifter is comprised of a microstrip transmission line (TL), loaded with series varactors ...
IEEE Transactions on Intelligent Transportation Systems, 2006
The objective of this paper is to collect and analyze data that can be used to model mode- and di... more The objective of this paper is to collect and analyze data that can be used to model mode- and different route-choice paradigms using same subjects and same experiment. In this paper, the authors estimated five models to address drivers' diversion, compliance, and route choice. In addition, the effect of advanced traveler information systems (ATIS) on the mode choice is also
IEEE Microwave and Wireless Components Letters, 2000
This letter presents a tunable positive/negative refractive index transmission line (TL) phase sh... more This letter presents a tunable positive/negative refractive index transmission line (TL) phase shifter utilizing active circuits. It comprises a microstrip TL loaded with series varactors and a shunt monolithic microwave integrated circuit (MMIC) to synthesize a tunable inductor. This implementation increases the phase tuning range and maintains the input and output matching of the phase shifter across the entire phase
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Papers by Mohamed Abdalla